Hand mortising-machine.



No. 777,659. PATENTED DEC. 20, 1904. J. BRADBURY, J. BRADBURY, JR., T.BRADBURY & G. E. BRADBURY. HAND MORTISING MACHINE.

APPLIGATION FILED JUNE 12, 1902. N0 MODEL.

2 SHEETSSHBET 1.

No 777.659. PATENTED DEC. 20, 1904. J. BRADBURY, J. BRADBURY, 33., T.BRADBURY 5: G. E. BRADBU'RY. HAND MORTISING MACHINE.

APPLIUATION FILED JUNE 12, 1902- NO MODEL. 2 SHEETS-SHEBT z 3 5longitudinally a lower carriage F.

UNITED STATES Patented December 20,1904, i

PATENT OFFICE.

JAMES BRADBURY, JOSEPH BRADBURY, JR, THOMAS BRADBURY, AND GEORGE EDWARDBRADBURY, OF GONGLETON, ENGLAND.

HAND MORTISlNG-IVIACHINE.

SPECIFICATION o ming P Of Lettelfii Patent 777,659, dated December 20,1904.

Application filed June 12, 1902- Serial No. 111,347.

To all whom it may concern:

Be it known that we, J AMES BRADBURY, of Johnston Square, Congleton, andJ osnrH BRADBURY, the younger, THOMAS BRADBURY,

5 and GEORGE EDWARD BRADBURY, of Throstle Nest House, Congleton, countyof Chester, England engineers, have invented certain new and usefulImprovements in Hand Mortising- Machines, of which the following is aspecifi- IO cation.

This invention relates to hand mortisingmachines, and has for its objectto provide a novel means for laterally and longitudinally feeding thewood to be acted upon preparatory to the boring and mortising operation.

In order that our invention may be properly understood and readilycarried into effect, we have hereunto appended two sheets of drawings,of which Figure 1 is a side elevation of a complete mortising and boringmachine embodying our invention. Fig. 2 is a part plan of the same. Fig.3 is a front view. Fig. 4 is a longitudi nal section, drawn to anenlarged scale, of the transverse table in which the wood to be treatedis clamped and unites a backward'andforward movement and a lateralfrom-side-toside movement, as hereinafter more fully explained. Fig. 5is a part section, also drawn to to an enlarged scale, of aroller-bearing for reducing friction of the travel of the table orcarriage in the grooves.

Upon the frame A of the machine is mounted to reciprocate forward andbackward or Carried by said carriage F and revoluble thereon is a hollowscrew G, in which works a spindle H, which extends beyond the end of thehollow screw and has loosely mounted thereon a hand 40 wheel K, adaptedto be connected either to the hollow screw S or the spindle H by meansof a slide-bar L, which is provided with projections Z and Z to enterrecesses M and N, one in a ring on the spindle and the other in the endof the hollow screw, said slide-barbeing held in either position by aspring-pressed ball Z, carried by the hand-wheel and adapted to enterindentations in said slide-bar. Carried by the lower carriage F is anupper carriage F, which is adapted for lateral travel 5 upon the saidlower carriage F and is provided with a rack-bar J, with which a pinionI upon the spindle H is adapted to mesh.

Any suitable means may be employed for securing the material to bemortised upon the carriage F; but it is preferred to use a plate G,having a roughened face and to which plate is'secured a rack c, whichworks through a bracket B. The rack is moved by a threetoothed worm D,(shown in Figs. 1 and 2 in dotted lines,) operated by a handle E.

The mortising device may be of any approved form; but in the formpreferred and herein shown the tool-carriage W is adapted to be raisedand lowered by means of a rack 5 V, carried by the carriage, and apinion U, carried by the frame A and operated by a balanced lever X. Thespindle T of the pinion U is adapted to be raised and lowered in theslot t, whereby the machine may be used upon 7 materials of varyingthicknesses.

The operation of the invention is as follows: When it is desired to movethe car riage F longitudinally, the projection Z of the slide-bar L isthrown into the notch N of the hollow screw G. The hand-wheel K is thenturned, revolving the said screw, which meshes with a section of a nutG, carried by the frame A, and consequently the lower carriage F ismoved. As the upper carriageFis car- 30 ried by the lower carriage it ismoved therewith. Vhen it is desired to move the upper carriage F, theprojection l of the bar L is thrown into the recess M, and thehand-wheel K is turned, whereby the hollow screw G re 5 mainsstationary, and the spindle H is turned, so that the pinion Ion saidspindle is rotated, and as this pinion meshes with the rack J on theupper carriage. F the said carriage is moved laterally. 9

Having thus described our invention, the following is what we claim asnew therein and desire to secure by Letters Patent:

1. In a machine of the class described, the combination with the lowercarriage and the upper carriage carried by the lower carriage, of ahand-wheel, means for moving the lower carriage to move both carriages,means for engaging the upper carriageto move said upper carriageindependently of the lower carriage, and means movableto connect thehandwheel with either of said carriage-operating means.

2. In a machine of the class described, the combination with the lowercarriage and the upper carriage carried thereby, of a hollow screwconnected with the lower carriage and a spindle extending through thescrew and connected with the upper carriage, and means adapted to beconnected either with the hollow screw to move both carriages or withthe spindle to move the upper carriage.

3. In a machine of the class described, the combination with the lowercarriage and the upper carriage carried thereby, of a hollow screwconnected with the lower carriage, a spindle extending through thehollow screw and connected with the upper carriage, ahandwheel mountedon the spindle, and means for connecting the handwheel either to thehollow screw or the spindle.

4:. In a machine of the class described, the

combination with the lower carriage, and the upper carriage carriedthereby and provided with a rack, of ahollow screw connected with thelower carriage and provided with a recess, a spindle carrying a pinionon one end to mesh with the rack on the upper carriage, extendingthrough the hollow screw, and provided with a recess, a hand-wheelmounted near one end of the spindle, a slide-bar provided withindentations and constructed to enter the recess of the spindle or therecess of the hollow screw, and a spring-pressed ball carried by thehand-wheel and adapted to enter the indentations of the slide-bar.

In testimony whereof we have affixed our signatures in presence of twowitnesses.

JAMES BRADBURY.

JOSEPH BRADBURY, JUR. THOMAS BRADBURY.

GEORGE EDWARD BRADBURY.

Witnesses:

JOHN LIDDLE, AeNEs MAoKm'rosH.

